Festival goers run toward the main stage to catch the beginning of Kendrick Lamar's set during the first weekend of Coachella 2012, on April 13, 2012. (AP Photo/Chris Pizzello)

An art installation hangs over the Empire Polo Club on April 15, 2012, part of Coachella 2012. (Frazer Harrison/Getty Images for Coachella)

A Coachella music fan dances during Day 3 of Coachella 2012, on April 15, 2012. (Frazer Harrison/Getty Images for Coachella)

Erika M. Anderson of the band EMA performs onstage at Coachella 2012, on April 13, 2012. (Karl Walter/Getty Images for Coachella)

Guests attend Black Lips performance during Day 2 of Coachella 2012, on April 14, 2012. (Michael Buckner/Getty Images for Coachella)

Hannah Hooper (left) performs with Grouplove at Coachella 2012, on April 13, 2012. (Reuters/David McNew)

DJ David Guetta, onstage at Coachella 2012, on April 14, 2012. (Mark Davis/Getty Images for Coachella)

Musician Grace Potter of the band Grace Potter and the Nocturnals performs during Coachella 2012, on April 14, 2012. (Frazer Harrison/Getty Images for Coachella)

Snoop Dogg smokes onstage during his headlining performance with Dr. Dre on the first weekend of Coachella 2012, on April 15, 2012. (AP Photo/Chris Pizzello)

People dance under water sprayed from hoses at the Do Lab at Coachella 2012, on April 14, 2012. (Reuters/David McNew)

Singer Rihanna gives a performance at Coachella 2012, on April 15, 2012. (Mark Davis/Getty Images for Coachella)

Music fans dance during Day 3 of Coachella 2012, on April 15, 2012. (Frazer Harrison/Getty Images for Coachella)